Natural ways to bring on labour?

I mentioned previously that I am currently the most pregnant I have ever been. Also, lucky me, Brisbane is having some of the hottest weather of the season. Oh lovely! So suffice to say, I am more than a little uncomfortable. The heat doesn't help, but I'm also rather large and ungainly, so I'm more than ready for Attila to come out. Any time now... or now...

I spend my days at the moment trying to encourage Attila to start the process. I know that when your body is ready, it's ready, but I'm sure a little incentive doesn't hurt right? There are plenty of natural suggestions out there to try.

Foremost with the suggestions is physical activity. So I've been really into the cleaning, the gardening and as much walking as I can comfortably do with this horrible heat and/or a toddler in tow. The cleaning part is discouraging though, as every time a room is cleaned, a puppy, or Ellie or Mr Fork will mess it up again.

Next on the list is food. I do love food, so I figure Attila might have picked up on some of that and be tempted out for more. Here's some of the things I've tried, from top, clockwise into the middle:

1. Candy buffet and sugary goodness at the Myer Giftorium launch
2. Amazingly delicious dessert of chocolate fudge brownie, peanut butter praline, cherries and vanilla (Attila was kicking around on a sugar high after that one!)
3. Spicy vegetarian Vietnamese noodle soup with extra chilli (I loved this, Attila spent the night giving me heartburn after)
4. Iced chocolate on soy milk
5. Spicy bean nachos with fresh guacamole 
6. Avocado plate with tomato, feta, roasted turkish bread and truffle oil
7. Grilled asparagus and cheese sandwich

Yes, Attila has been craving lots of dairy. While I can't stomach cow milk, I will give in and have animal-rennet-free cheese. I figure if the baby needs calcium, it's not really up to me to deprive him.

There are also the good old standbys, fresh pineapple and raspberry leaf tea (in a fancy glass with ice because... well, I'm classy like that, and it's HOT!)

Despite feeling like I have consumed my weight in (delicious, delicious, cold) pineapple and downed litres of tea, nothing.

So I'm waiting, with bated breath, which is about all I can manage as Attila is taking up so much room in there anyway. The house is clean, the nursery awaits, and every night Mr Fork encourages Ellie to tell Attila to "hurry up and come out".

Come on baby!

What other methods to bring on labour am I missing?